# Alteration or repair permit B2507262 at 3700 O St NW, Washington

DC Department of Buildings permit B2507262: issued Oct 6, 2025 for alteration or repair work at 3700 O St NW. HPRB & CFA Riggs Distler, in conjunction with our structural subcontractor, has determined that underpinning is required at four locations due to the proximity of the buildings and the new piping installation trench excavation as shown on the drawings. Underpinning for four structures: 1) Guard House at 37th O ST 2) 3624 N ST 3)361/2 N ST 4) 1236 N ST.

- Permit number: B2507262
- Issued: Oct 6, 2025
- Type of work: Alteration or repair (city: Construction, alteration and repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20057
- All permits at this address: https://nearbypermits.com/washington-dc/address/3700-o-st-nw/

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Source: DC Department of Buildings permit data (https://opendata.dc.gov/datasets/7296e6392349498bb6ba6ba3db836644_18), District of Columbia, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Checked 2026-10-11 11:15 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3700 O St NW: https://nearbypermits.com/washington-dc/address/3700-o-st-nw/